Photorejuvenation, also known as intense pulsed light or compound colored light, is a more common medical cosmetic procedure that uses broad-spectrum light in the 500-1200nm band to produce intense pulsed light that acts on human skin to produce a series of photochemical effects, which has a certain improvement effect on the skin. Photorejuvenation can restore skin elasticity, stimulate fibroblasts to secrete more collagen, smooth out fine wrinkles on the face, lift and tighten the skin, and delay photoaging of the skin. In addition, it also has the effect of removing spots, improving redness, enlarged pores and improving oily skin. In general, if you can do the treatment (about 5 times), you can have better maintenance of your skin after the treatment, and the effect of photorejuvenation can be maintained for about 1-2 years without causing other damage to the skin, which is safe and effective. In addition, about 1 month before the photorejuvenation treatment, don’t take vitamin A drugs and don’t use any cosmetics on the day of treatment; it is also not advisable to be exposed to the sun for a long time; after the photorejuvenation, pay attention to skin hydration and moisturizing, and do a good job of sun protection to reduce pigmentation, which will help maintain the effect. In addition, there can be a slight burning sensation during the photorejuvenation treatment, which is normal. If the patient’s skin is prone to recurrence of dermatitis, with abscesses and breakouts, or has a history of photosensitive allergies, photorejuvenation should not be performed.